What Causes Spider Veins, and How Can Sclerotherapy Help?

Spider veins are incredibly common, especially on the legs and thighs, and while they aren’t usually painful, they can make you feel self-conscious about your skin. The good news is, you don’t have to just live with them. 

If you notice visible veins on your legs or thighs, there’s a tried-and-true solution that doesn’t involve surgery or a long recovery time. It’s called sclerotherapy, which might be the answer you’ve been looking for.

What Are Spider Veins, Really?

Spider veins are small, dilated blood vessels close to the skin’s surface. They can appear as thin red, blue, or purple lines that may look like tiny webs or branches, hence the name. While they’re usually harmless, they’re often unwanted for cosmetic reasons.

So, what causes them? There are a few key factors. Genetics plays a big role, so if your parents had spider veins, you’re more likely to get them too. Hormonal changes—like those from pregnancy, birth control, or menopause—can increase your risk, which is why the causes of spider veins in women are often linked to life stages or hormonal shifts. 

Other common contributors include standing or sitting for long periods, weight fluctuations, sun damage, and even injuries to the skin.

Sclerotherapy: The Gold Standard for Spider Vein Treatment

Sclerotherapy has remained one of the best treatments for spider veins for a good reason. It’s safe, effective, and minimally invasive.

Here’s how it works: a tiny needle injects a solution directly into the affected veins. This solution irritates the lining of the vein, causing it to collapse and eventually fade from view as the body naturally reroutes blood flow through healthier veins. Over time, the body reabsorbs the treated veins, leaving your skin looking clearer and more even-toned.

The entire procedure usually takes less than 30 minutes, and there’s no need for anesthesia. For many patients in Westchester and Scarsdale, it’s a quick in-office visit that fits easily into a busy schedule.

What to Expect Before, During, and After Treatment

Before your sclerotherapy session, you’ll meet with one of our providers to evaluate your veins and determine whether you’re a good candidate. If so, we’ll map out a treatment plan tailored to your skin and goals.

You might feel a slight pinch or mild burning sensation during the treatment at the injection sites, but most people find the process very tolerable. Afterwards, compression stockings may be recommended to support healing and improve circulation. 

You can typically return to your normal activities the same day, though we may advise avoiding intense workouts for a few days.

Results develop gradually, often within a few weeks, with continued improvement over a few months. Some veins may require multiple treatments for optimal fading, but many patients see dramatic improvement with just one session.

Why Choose Non-Surgical Vein Treatment at Westchester Cosmetic Dermatology?

​​Sclerotherapy isn’t new, but technique, training, and attention to detail make all the difference in your results. At Westchester Cosmetic Dermatology, we’re proud to offer expertly performed sclerotherapy for spider veins as part of our advanced aesthetic and medical skincare services.

We treat patients from across Scarsdale and Westchester, combining years of clinical experience with personalized care. And if you’re wondering about the credentials behind our team—Dr. David Kriegel, our lead dermatologist, was recently named one of New York’s top doctors for 2024 by his peers. His selection, part of a rigorous review by MSP Communications, was featured in New York Super Doctors in The New York Times Sunday Magazine on May 4, 2025. It’s just one more reason patients trust us to deliver care that’s thoughtful, skilled, and results-driven.

Whether you’re exploring spider vein removal for the first time or simply looking to improve your skin’s appearance, our full range of dermatology services is designed to meet you where you are. We’ll guide you through the process with comfort and confidence.

Take the First Step Toward Smoother, Vein-Free Skin

You don’t have to hide your legs or live with unwanted spider veins. With the right treatment and provider, you can feel confident in your skin.

Ready to get started? Take the first step and book your consultation today!